Spectacled Caiman (a crocodilian reptile found in much of Central and South America). It lives in a range of lowland wetland and riverine habitat types and can tolerate salt water as well as fresh; due in part to this adaptability it is the most common of all crocodilian species.

Saltwater Crocodile - Yep, believe it or not this image is REAL. It was taken at a zoo in Taiwan in 2007 after a crocodile severed the hand of the vet treating him. Amazingly, other staff managed to retrieve the limb after scaring the croc with gunfire and it was later reattached. Saltwater crocodiles are one of the deadliest animals on the planet, with numerous deaths reported throughout the world every year.